In this work, dried leaves of Typha angustifolia (TA), also known as the
common cattail, were used as an adsorbent in kinetic studies of Pb(II)
adsorption from synthetic aqueous solutions. Batch adsorption studies with
dried TA leaves were conducted and they were able to adsorb Pb(II) from 100
mL of a 25 mg L-1 Pb(II) solution effectively with the optimized dosage of
0.6 g. Adsorption equilibrium was achieved within 8 hours with an effective
removal percentage of 86.04 %. Adsorption kinetics was further evaluated
using four kinetic models, i.e., the pseudofirst order, pseudo-second order,
intraparticle diffusion and Elovich model. Fitting of the data was performed
based on linear regression analysis. The sorption kinetic data fitted best to
the pseudo-second order model with an R2 of 0.9979, followed closely by the
Elovich model with an R2 of 0.9952. The obtained results showed the
adsorption of Pb(II) by TA leaves, which is an abundant biological material,
is feasible, cheap and environmentally friendly.